Security lock

ABSTRACT

A security lock which is tamperproof and can be affixed to the inside or outside of a door which opens either from the right or left, capable of functioning as a security bolt per se, a security bolt with a padlock and/or a key. The security lock comprises a baseplate provided with a pair of integral guide means for a sliding bar, one guide means being provided with an integral padlock accommodation means which cooperates with a padlock accommodation means integral with said sliding bar. A swivel lever attached to the baseplate and activated by a key is capable of sliding the sliding bar into an open or closed position. This provides for both padlocking and locking with a key any type or size door.

United States Patent 1 amass Inventor Joseph Bauemfeind 64 Washington Ave., West Sayville, N.Y. 1 1796 Appl. No. 32,831 Filed Apr. 29, 1970 Patented Aug. 17, 1971 SECURITY LOCK 8 Claims, 6 Drawing Figs.

US. Cl 70/129, 70/417, 292/148, 292/152 Int. Cl E05c l/04, E05b 9/00 Field of Search 70/ 1 29, 134, 417, 416; 292/148, 152

References Cited UNITED STATES PATENTS 316,760 4/1885 Diehlmann 70/134 X 12/1927 Bronson et al 70/417 X 2,482,341 9/1949 I-Iolmsten 292/148 2,574,415 11/1951 Robinson 70/134X 3,451,703 6/1969 Roegner 70/129 X FOREIGN PATENTS 169,508 4/1906 Germany 70/134 Primary Examiner-Albert G. Craig, Jr. Att0rneys-Edith R. T. Grill and Murray M. Grill cooperates with a padlock accommodation means integral with said sliding bar. A swivel lever attached to the baseplate and activated by a key is capable of sliding the sliding bar into an open or closed position. This provides for both padlocking and locking with a key any type or size door.

v SECURITY LOCK This invention relates to tamperproof locks for doors of all kinds and sizes, said locking device capable of being mounted on the inside or outside of a door that either opens from the right or left side and capable of being locked from either the inside or outside or both by means of a padlock and/or a key.

The prior art is replete with slide locks, dead bolt locks, key locks and locking devices of intricate design. However, the art of picking these locks has kept pace with the development of the varied locking devices, to the chagrin of the business as well as the private communities.

Accordingly, a primary object of this invention is to provide a multipurpose security lock.

Another object of the invention is to provide a lock simple to manufacture and install comprising a minimum number of parts easily repaired and/or replaced.

Still another object of this invention is the provision of a tamperproof locking device in order to discourage unauthorized entry.

More specifically, the instant invention relates to a locking device comprising a baseplate adapted to be secured to a door; an elongated bolt slidably mounted on said baseplate by means of a pair of supporting brackets secured to said baseplate; said baseplate being provided with a pair of integral longitudinal guide means to provide a confined passage for longitudinal movement of said bolt from an extended position in which an end portion of said bolt overhangs the end of the said baseplate and is adapted to enter a keeper mounted on the wall support adjacent the door, to a retracted position in which said end portion of said bolt does not overhang said baseplate; one of said guide means .on said baseplate being provided with an integral padlock-accommodation means which cooperates with an integral padlock-accommodation means provided by said bolt to secure said bolt against movement relative to said baseplate both in bolt-extended, locked position and in bolt withdrawn, unlocked position; a manual means for actuating said bolt; and a key-operated actuating means for said bolt, situated on the opposite side of a door. which engages a swivel lever situated on said baseplate and operatively connected to said bolt to move said bolt into a locked or unlocked position. The swivel lever rotates to engage one ofa pair of integral swivel guides situated on the rear face of the sliding bolt in order to effect sliding movement of the bolt into either an extended or retracted position. An additional preferred feature of instant invention provides for the presence of a lock spring on the baseplate adapted to engage either one of a pair of lock spring stops situated on the rear face of the sliding bolt in order to prevent accidental movement of said bolt from either a locked or unlocked position. The padlock accommodation means of both the baseplate and the bolt are each provided with two-openings of different size to accommodate a variety of padlock hasps. The instant invention provides for the locking device to be used either with a padlock per se or in conjunction with a key. Namely, when the bolt is drawn or in an extended position and padlocked, the lock cannot be opened with the key. On the other hand. when the bolt is not drawn or in a retracted position, the bolt can be drawn by means of the key and subsequently padlocked as desired.

Other objects of this invention will become apparent upon reading the following specification in connection with the drawing in which:

FIG. I in a perspective view showing entire embodiment partially fixed in place and in locked position.

FIG. 2 is a perspective view of the'locking device in open position.

FIG. 3 is a rear view of lock in closed position.

FIG. 4 is a front elevational view of lock element without the cover.

FIG..5 is an exploded perspective of the components of the lock mechanism.

FIG. 6 is a cross section through 6-6 of FIG. 4 revealing the internal spring and locking elements.

In accordance with this invention, and as shown by FIG. 2, the instant locking device comprises three operating components and their attachments, namely baseplate 1, bolt bracket 9 and sliding bolt 10, assembled by means of blind bolt 15 which secures bracket 9 while supporting bolt 10, to baseplate 1, all contained within housing 16. The simplicity of utilizing a minimum number of parts provides for a sturdier, uncomplicated lock, easier to manufacture, at a lower cost, and substantially free of repairs.

As defined by the above drawings, the instant security lock comprises baseplate 1 provided with two integral longitudinal guides 2 and 22, guide 2 being additionally provided with integral padlock accommodation 3 which is a horizontal flange equipped with at least two openings 4 and 5 of different sizes to accommodate the hasp 6 of a padlock 7, which may be key operated or a combination lock.

Two brackets 8 and 9 are mounted on baseplate ll adjacent the forward and rear ends of longitudinal guides 2 and 22 to accommodate sliding bolt 10. Integral with sliding bolt 10 is padlock accommodation means 11, which is a horizontal flange provided with two openings 12 and 13 adapted to coincide with openings 4 and 5 respectively when bolt 10 slides in the passage between guides 2 and 22 and into brackets 8 and 9. Padlock accommodation 11 may be additionally provided with extension 14 which functions as a handle for manually sliding bolt 9 into locked or unlocked position. Bracket 8 is preferably made integral with baseplate l by welding or by other suitable means in order to simplify and limit the number of parts contained in the locking device. Bracket 9 is affixed to baseplate l by means ofa blind bolt 15 inserted through opening 16 on baseplate l and adapted to engage threaded opening v 47 on bracket 9.

Blind bolt 15 constitutes the sole means of disassembling or assembling the locking device. This locking device cannot be disassembled while mounted on the door because the head of the bolt is situated between the back of baseplate l and the wall to which it is affixed and is inaccessible. This affords protection against tampering while in use. even with cover 16 removed.

Sliding bolt 10 is preferably in the shape of a rectangular bar of suitable size to slide longitudinally on baseplate 10 within the passage provided by guides 2 and 22. Rear face of bolt 10 is provided with two pegs functioning as swivel guides b and b adapted to be engaged by swivel lever l7 as the means for sliding bolt 10 into an extended or retracted position, as lever 17 rotates on pin 18 within cutout l9 situated on baseplate 10.

Pin 18 extends through baseplate I10 and terminates in a slightly raised head 20 which is provided with a slot 21 adapted to engage and be activated by a key of any conventional cylindrical lock (not shown) mounted on the opposite side of the door. Rear face of bolt 10 is additionally provided with two lock spring stops, a and a which are depressions adapted to engage lock spring 23 which is attached to baseplate 10 in order to prevent accidental movement of bolt 10 from either the locked or unlocked position.

The back of baseplate l is preferably provided with an overhang 24 of about one-eighth inch situated along its outer rim in order to accommodate the key ofa conventional cylindrical lock when mounted on a door. However. this overhang is not an essential feature ofthis lock. since the absence of aforesaid overhang merely necessitates that the door he cut out or otherwise suitably prepared for mounting of the locking device.

Another additional, but not essential feature of instant invention is the attachment ofa closure peg 25 ofsuitable size to be inserted into registered openings 4 and 112 or 5 and 12 to keep the lock in either a closed or opened position respectively. This is usually used when the lock is mounted on the inside of a door to provide privacy to someone within the room. Closure peg 25 is attachedto baseplate 1 via chain 26 and bolt 27 which engages threaded opening 28 on overhang 24 of baseplate 1.-

The assembled lock comprising baseplate l, sliding bolt l0 and bracket 9, is mounted directly on the door adjacent its free end and secured thereto by means of a plurality of fasteners such as carriage bolts or similar blind bolts through openings 29 on baseplate 1 and registered openings 30 on bracket 9. The only opening made in the door is to accommodate the key of the conventional cylindrical lock when used with instant lock. This provides for a stronger door as a support for the instant locking device as opposed to the drilling of holes for the mounting of conventional locks. The mounted locking device is in a position for sliding bolt 10 to project into keeper 31 mounted on the stationary part of the opening in which the door is hung. Keeper 31 is provided with a perpendi cularly extending flange 32 containing apertures 33 through which fasteners 34 such as blind bolts, extend into the door jamb and are completely hidden from view when the door is closed. This discourages tampering since the keeper, which may also function as a hasp, cannot be removed when the door is closed. An advantage of mounting the keeper onthe wall support adjacent the door as shown in FIG. 1 rather than within said support (doorjamb) is that no cutout is necessary within said support to accommodate said keeper. Elimination of this cutout strengthens the structure and discourages a thief from trying to break the doorjamb. In addition, since the bolt is not situated within the doorjamb, as is the case of conventional locks, the insertion of a file or similar device within the doorjamb to retract the bolt and thereby open the lock is impossible.

The assembled locking device comprising the three parts aforedescribed, namely baseplate 1, bracket 9 and sliding bolt 10, is enclosed by housing 16 which snaps onto baseplate l as a protection against the elements as well as to provide an attractive appearance. Housing 16 comprises a front wall 35 having a longitudinal slotlike opening 36 to accommodate padlock accommodations 3 and 11, either in registered or unregistered position; a top and bottom wall 37 provided with an opening 38 which registers with opening 28 on baseplate l for insertion of a fastening means 27 such as a screw to adtlitionally secure housing l6 to baseplate I; end wall 39 which rests on baseplate l and is provided with an opening 40 preferably rectangular, to accommodate sliding bolt l of similar shape which projects beyond the casing wall 39 in the locked position; and a second end wall 41 opposite wall 39. When bolt is in retracted position, handle 14 of padlock accommodation 11 attached to bolt 10, prevents removal of housing 16 from the locking device, thereby affording another safety measure against dismantling or otherwise tampering with aforesaid lock.

The various parts of this locking device is preferably constructed out of tempered steel as a further deterrent against tampering, and as an additional safety feature.

While the invention has been described with reference to various embodiments thereof as hereinbefore set forth, it isclearly understood that the invention is not limited thereto but includes various modifications and equivalents within the scope of the instant invention.

What 1 claim is:

1. A locking device comprising a baseplate adapted to be secured to a door; an elongated bolt slidably mounted on said baseplate by means of a pair of supporting brackets secured to said baseplate; said baseplate being provided with a pair of integral longitudinal guide means to provide a confined passage for longitudinal movement of said bolt from an extended position in which an end portion of said bolt overhangs the end of the said baseplate and is adapted to enter a keeper mounted on the wall support adjacent the door, to a retracted position in which said end portion of said bolt does not overhang said baseplate; one of said guide means on said baseplate being provided with an integral padlock-accommodation means which cooperates with an integral padlock-accomodation means provided by said bolt to secure said bolt against move ment relative to said baseplate both in bolt extended, locked position and in bolt withdrawn, unlocked position; a manual means for actuating said bolt; and a key-operated actuating means for said bolt, situated on the opposite side of a door, which engages a swivel lever situated on said baseplate and operatively connected to said bolt to move said bolt into a locked or unlocked position.

2. A locking device in accordance with claim 1, wherein the rear face of the bolt is provided with an integral pair of swivel guides each one adapted to be engaged by the swivel lever as the operating means for sliding said bolt into an extended or retracted position respectively.

3. A locking device in accordance with claim 2, wherein the swivel lever is rotatably activated by the key of a cylindrical lock mounted on the opposite side of the door.

4. A locking device in accordance with claim 3, wherein the baseplate is provided with a lock spring adapted to engage either one of a pair of lock spring stops integral with the rear face of the bolt to resist movement of said bolt from either a locked or unlocked position.

5. A locking device in accordance with claim 4, wherein the padlock accommodation means is provided with at least two openings ofdifferent sizes.

6. A lock according to claim 5, additionally provided with a housing having registered openings for said sliding bolt and for said padlock-accommodation means.

7. A locking device according to claim 1, wherein said baseplate is mounted directly on the door adjacent its free end by means of a plurality of fasteners.

8. A locking device according to claim 1, which is constructed out of tempered steel. 

1. A locking device comprising a baseplate adapted to be secured to a door; an elongated bolt slidably mounted on said baseplate by means of a pair of supporting brackets secured to said baseplate; said baseplate being provided with a pair of integral longitudinal guide means to provide a confined passage for longitudinal movement of said bolt from an extended position in which an end portion of said bolt overhangs the end of the said baseplate and is adapted to enter a keeper mounted on the wall support adjacent the door, to a retracted position in which said end portion of said bolt does not overhang said baseplate; one of said guide means on said baseplate being provided with an integral padlock-accommodation means which cooperates with an integral padlock-accomodation means provided by said bolt to secure said bolt against movement relative to said baseplate both in bolt extended, locked position and in bolt withdrawn, unlocked position; a manual means for actuating said bolt; and a keyoperated actuating means for said bolt, situated on the opposite side of a door, which engages a swivel lever situated on said baseplate and operatively connected to said bolt to move said bolt into a locked or unlocked position.
 2. A locking device in accordance with claim 1, wherein the rear face of the bolt is provided with an integral pair of swivel guides each one adapted to be engaged by the swivel lever as the operating means for sliding said bolt into an extended or retracted position respectively.
 3. A locking device in accordance with claim 2, wherein the swivel lever is rotatably activated by the key of a cylindrical lock mounted on the opposite side of the door.
 4. A locking device in accordance with claim 3, wherein the baseplate is provided with a lock spring adapted to engage either one of a pair of lock spring stops integral with the rear face of the bolt to resist movement of said bolt from either a locked or unlocked position.
 5. A locking device in accordance with claim 4, wherein the padlock accommodation means is provided with at least two openings of different sizes.
 6. A lock according to claim 5, additionally provided with a housing having registered openings for said sliding bolt and for said padlock-accommodation means.
 7. A locking device according to claim 1, wherein said baseplate is mounted directly on the door adjacent its free end by means of a plurality of fasteners.
 8. A locking device according to claim 1, which is constructed out of tempered steel. 